汽车发动机扭振谐值的计算研究

讨论了汽车发动机扭振激励谐值与离散付里叶变换的关系，分析计算了示功图测试和缸内模拟计算各种因素对计算激励谐值的影响。给出了发动机扭振激励谐值的计算结果，并计算分析了多缸发动机翻倒激振转矩的激励谐值，为汽车发动机悬置系统和高性能、高转速发动机辅助平衡机构设计提供了激振数据。

Relation between automobile engine torsional vibration exciting harmonics and the Fourier divergent transformis discussed, effect of various factors of indicating diagram test and analogUe computation in the cylinder on calculated excitingharmonics is analyzed and calculated, result of calculation of the engine torsional vibration exciting harmonics given out, andexciting harmonics of multi-cylinder engine inverted exciting torque calculated and analyzed to offer exciting vibration data fordesign of automobile engine suspension system as well as for high performance, high speed engine auxiliary balancing mecha